app/scoped_handle_gtk.h

   1 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef APP_SCOPED_HANDLE_GTK_H_
   6 #define APP_SCOPED_HANDLE_GTK_H_
   7
   8 #include <gdk/gdk.h>
   9
  10 // Wraps a GdkRegion. This class provides the same methods as ScopedGDIObject in
  11 // scoped_handle_win.
  12 class ScopedRegion {
  13  public:
  14   ScopedRegion() : region_(NULL) {}
  15   explicit ScopedRegion(GdkRegion* region) : region_(region) {}
  16
  17   ~ScopedRegion() {
  18     Close();
  19   }
  20
  21   void Set(GdkRegion* region) {
  22     Close();
  23
  24     region_ = region;
  25   }
  26
  27   GdkRegion* Get() {
  28     return region_;
  29   }
  30
  31   GdkRegion* release() {
  32     GdkRegion* region = region_;
  33     region_ = NULL;
  34     return region;
  35   }
  36
  37  private:
  38   void Close() {
  39     if (region_) {
  40       gdk_region_destroy(region_);
  41       region_ = NULL;
  42     }
  43   }
  44
  45   GdkRegion* region_;
  46
  47   DISALLOW_COPY_AND_ASSIGN(ScopedRegion);
  48 };
  49
  50 #endif  // APP_SCOPED_HANDLE_GTK_H_